Acer didn't specify the either Timeline Ultra's thickness, but they'll be impressively slim if the pics are anything to go by.

Acer did say the two computers - the subject of many a rumour in months past - will come with a choice of Intel Core i processors; SSD and HDD storage options; optical drives; Dolby Home Theatre surround sound capabilities; HDMI output; and USB 3.0 portage.

It claimed the laptops, like others in the Timeline series, can run on battery for more than eight hours.

Smart sleep tech - Acer calls it "Green Instant On" - allows the machines to come awake in 1.5 seconds and "ensures battery life that lasts several weeks", the company promised.

The Aspire Timeline Ultra will start shipping in Q1. Prices have yet to be set. ®